Which of the following statements is true?
a) only males can get an X-linked. disorder.
b) only females can get an X-linked disorder.
c) only males can get a Y-linked disorder.
Answer:
The answer is a
Explanation:
X-linked disorders result from mutated genes on the X chromosome. Males, who have only one X chromosome (i.e., they are hemizygous), will fully express an X-linked disorder. On the other hand, females, who have two X chromosomes, will be carriers of the defect in the majority of cases, and so they are usually asymptomatic.
Which two processes are responsible for the formation of fog?
Answer:
Explanation:
evaporation
Can someone help on this science question please.
Answer:
D. all of the above
Explanation:
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Answer:
D all of the above
I need help please in ASAP
Answer:
C- Setups one and two I think. Don't put it though unless another person also says C cus im not completely sure-
Which of the following is conical movement in which the distal end of a structure moves in a circle and the proximal end remains relatively fixed?
A. Protraction
B. Rotation
C. Circumduction
D. Retraction
Answer:
The correct answer is OPTION C (Circumduction)
Explanation:
Circumduction is motions without clear opposites of the part of the body, an example is rotating the hand from the wrist. The answer is circumduction because this type of movement ensures the distal end of a bone moves in a circle while the proximal end remains relatively stable is particularly found in bones where the movements of the joints are opposite to each other example is the ball and socket joint movement. For circumduction to take place, the degree of distance between two bones of the body has to be decreased and sometimes straightened to increase the level of movement or motion produced, there must be a movement towards the middle of the body and sometimes joint movement away from the middle of the body. All these movements are in order.
When is osmosis used by
cells to move water across a selectively permeable
membrane?
A. Osmosis is used by cells when large molecules pass freely across the selectively permeable membrane.
B. Osmosis is used by cells to create equilibrium when large molecules can't pass through the membrane.
C. Osmosis is constantly in process inside of a cell, regardless of equilibrum.
Answer:
B.
Explanation:
Osmosis moves water from the part of the membrane with less solutes to the part with more solutes. This will continue until the cell or whatever it is reaches equilibrium.
A scientist is attempting to provide support for the hypothesis that RNA was the first genetic material. Which of the following would be a workable alternate hypothesis?
(A) RNA, like DNA, is a carrier of genetic information and contains the nitrogen bases adenine, guanine, and cytosine.
(B) RNA can be observed to self-replicate without the assistance of proteins, while DNA always requires protein-based enzymes to replicate.
(C) RNA exists in both single-stranded and double-stranded configurations; however, it is less stable compared with DNA.
(D) Transfer RNA and ribosomal RNA are products of transcription, but they are not translated as is mRNA.
Answer:
(A) RNA like DNA is a carrier of genetic information and contains the nitrogen bases adenine, guanine and cytosine.
Explanation:
RNA is a single stranded molecule which is replicating molecule that plays its role evolution of different stages. DNA is double stranded molecule that is stable under alkaline conditions and perform various functions in different body parts. RNA provides template on which DNA nucleotides assemble.
RNA can be observed to self-replicate without the assistance of proteins, while DNA always requires protein-based enzymes to replicate.
(B) is the best alternate hypothesis
What is RNA?RNA is a nucleic acid that has a single-stranded structure. RNA is also a genetic material. It helps in coding, decoding, and gene expression.
RNA was the first genetic materialRNA can be replicated by itself.It has evolved all the methods that are necessary to store genetic information.Thus, the hypothesis (B) RNA can be observed to self-replicate without the assistance of proteins, while DNA always requires protein-based enzymes to replicate is the correct option.
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What do individuals who are heterozygous for codominant traits show for a
phenotype?
Answer:
Individuals who are heterozygous for co-dominant traits show in their phenotype both traits, without mixing.
Explanation:
Codominance is a type of inheritance that does not follow the rules of Mendelian inheritance, characterized by the absence of recessive traits and two different alleles for a character that behave as dominant.
Heterozygous individuals can be observed in codominance that show two different characteristics in their phenotype, without mixing, such as cattle with spotted skin or two colored flowers.
2. The structural and functional unit of life is (a) a cell, (b) an organ, (c) the organism, (d) a
molecule.
Answer:
A. A cell
Explanation:
Cells are the building blocks of life.
They are the biological units of organisms and are the basic structural and functional units of life.
Cells are the smallest units of life.
Cellular Respiration occurs in which organelle?
a. ribosome
B. golgi
c.nucleus
d.mitochondria
Answer:
the answer d. mitochondria
Which structure forms the outer wall of a mollusk's body and protects its internal organs?
-mantle
-foot
-gill
-shell
Answer:
mantle
Explanation:
just did this question
Answer:
The answer is mantle
Explanation:
Pretend you are a molecule of oxygen and you have reached the blood stream and attached to the hemoglobin on a red blood cell.
Describe as you travel through the different types of blood vessels (capillaries, arteries, and veins) as you make your journey through the different types of circulation (pulmonary/lungs, coronary/heart, and systemic/body) and reach the cells of the body.
Answer:
Blood flowing through the circulatory system transports nutrients, oxygen, and water to cells throughout the body. The journey might begin and end with the heart, but the blood vessels reach every vital spot along the way. These arteries, veins, and capillaries make for a vast network of pipes. If you were to lay out all the blood vessels of the body in a line, they would stretch for nearly 60,000 miles. That’s enough to circle the earth almost three times!
1. The Three Major Types of Blood Vessels: Arteries, Veins, and Capillaries
The different types of blood vessels and their layers
Blood vessels flow blood throughout the body. Arteries transport blood away from the heart. Veins return blood back toward the heart. Capillaries surround body cells and tissues to deliver and absorb oxygen, nutrients, and other substances. The capillaries also connect the branches of arteries and to the branches of veins. The walls of most blood vessels have three distinct layers: the tunica externa, the tunica media, and the tunica intima. These layers surround the lumen, the hollow interior through which blood flows.
2. Oxygenated Blood Flows Away from the Heart Through Arteries
The major arteries and branches of the body
The left ventricle of the heart pumps oxygenated blood into the aorta. From there, blood passes through major arteries, which branch into muscular arteries and then microscopic arterioles. The arterioles branch into the capillary networks that supply tissues with oxygen and nutrients. The walls of arteries are thicker than the walls of veins, with more smooth muscle and elastic tissue. This structure allows arteries to dilate as blood pumps through them.
3. Veins Carry Blood Back Toward the Heart
The superior and inferior vena cava
After the capillaries release oxygen and other substances from blood into body tissues, they feed the blood back toward the veins. First the blood enters microscopic vein branches called venules. The venules conduct the blood into the veins, which transport it back to the heart through the venae cavae. Vein walls are thinner and less elastic than artery walls. The pressure pushing blood through them is not as great. In fact, there are valves within the lumen of veins to prevent the backflow of blood.
4. Exchange of Gases, Nutrients, and Waste Between Blood and Tissue Occurs in the Capillaries
Click to play an animation of blood flow through capillaries
Capillaries are tiny vessels that branch out from arterioles to form networks around body cells. In the lungs, capillaries absorb oxygen from inhaled air into the bloodstream and release carbon dioxide for exhalation. Elsewhere in the body, oxygen and other nutrients diffuse from blood in the capillaries to the tissues they supply. The capillaries absorb carbon dioxide and other waste products from the tissues and then flow the deoxygenated blood into the veins.
5. The Constant Pumping of the Heart Maintains Blood Pressure and Supply Throughout the Body
Click to play an animation of blood pressure measurement
The blood moving through the circulatory system puts pressure on the walls of the blood vessels. Blood pressure results from the blood flow force generated by the pumping heart and the resistance of the blood vessel walls. When the heart contracts, it pumps blood out through the arteries. The blood pushes against the vessel walls and flows faster under this high pressure. When the ventricles relax, the vessel walls push back against the decreased force. Blood flow slows down under this low pressure.
treatment for PTSD campus be described A.multumodal multi-phasic b. atheoretical C. stress inclusion D.eclectic
Answer:
A. multimodal and multiphasic
Explanation:
Hypnosis can be defined as a mental state that is trance-like and it is typically characterized by minimal peripheral awareness, vivid fantasy, highly focused attention (concentration) and an increased level of suggestibility.
Simply stated, hypnosis is a sleep-like state and as such can be used by psychologist or therapist to reduce the sense of pain, induce relaxation, strengthen certain behaviors etc.
Hence, one of the ways in which hypnosis can be administered by psychologists or therapists is through Hypnotherapy, which typically involves the use of hypnosis in psychotherapy to treat medical conditions such as depression, eating disorders, anxiety, post-traumatic stress disorder (PTSD).
The treatment for post-traumatic stress disorder (PTSD) can be described as multimodal and multiphasic because it is characterized by series of activities and it takes place in various phases.
Which of the following sequences
(on one strand of a double stranded
DNA molecule) is likely to be a
cleavage site for a restriction
enzyme? Explain your answer.
a. CGTACC
b. ATGTCG
c. GATATG
d. TGCGCA
Answer:
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
Hello!
✧･ﾟ: *✧･ﾟ:* *:･ﾟ✧*:･ﾟ✧
❖ The correct answer is D) two double-stranded DNA molecules, each composed of one and one old strand. This is known as semi-conservative replication.
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What living systems have distinct structures and sets of functions? Be sure to refer to class notes for 2.02.
Question 1 options:
cells
tissue
All of the listed answers have distinct structures and sets of functions
organisms
Answer
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Which of the following will cause a decrease in ADH production?
(A) dehydration
(B) an increase in osmotic pressure of blood
(C) drinking water
(D) abnormally low blood pressure
Perception is:
O A. creating images through your experiences.
O B. picking up information and relaying it to the brain.
O C. the ability to work top down or bottom up.
O D. organizing and interpreting sensory input.
Why do you think your immune system sometimes fails and we get sick anyway?
Answer:
If you've noticed that you're often sick, feel fatigued or have other nagging symptoms you can't figure out, it may mean your immune system is weakened (OwO)
Explanation:
Your immune system can also be weakened by smoking, alcohol, and poor nutrition. AIDS. HIV, which causes AIDS, is an acquired viral infection that destroys important white blood cells and weakens the immune system. People with HIV/AIDS become seriously ill with infections that most people can fight off.
I look in the mirror but i'm not there and instead i see a strange disoriented ghost like figure. Whats wrong with me. Is this a sign of death. Please help me.
Answer:
Science shows that if you stare at your face long enough your brain will get bored and make your face look distorted and ghost like
Explanation:
Answer:
try not to stare into the mirror so long or get some fresh air outside
What type of medication have they tested using tissue grown with this
technology?
Answer:
Tissue engineering evolved from the field of biomaterials development and refers to the practice of combining scaffolds, cells, and biologically active molecules into functional tissues. The goal of tissue engineering is to assemble functional constructs that restore, maintain, or improve damaged tissues or whole organs. Artificial skin and cartilage are examples of engineered tissues that have been approved by the FDA; however, currently they have limited use in human patients.
Regenerative medicine is a broad field that includes tissue engineering but also incorporates research on self-healing – where the body uses its own systems, sometimes with help foreign biological material to recreate cells and rebuild tissues and organs. The terms “tissue engineering” and “regenerative medicine” have become largely interchangeable, as the field hopes to focus on cures instead of treatments for complex, often chronic, diseases.
The location in the cell for aerobic respiration is the..?
Answer:
mitochondria
Aerobic respiration is characteristic of eukaryotic cells when they have sufficient oxygen and most of it takes place in the mitochondria.
Explanation:
Read the observation, question, and hypothesis.
Observation: Hotter water seems to produce more bubbles than cold water when it is mixed with dish soap.
Question: Does water temperature affect the amount of bubbles that are produced from dish soap?
Hypothesis: Hot water produces more bubbles than cold water when it is mixed with dish soap.
D’Angela will mix soap and water in a clean beaker four times. To test her hypothesis, which conditions should change or remain the same each time?
The water temperature should remain the same, but the type of soap should change.
The type of soap should remain the same, but the quantity of soap should change.
The water temperature should remain the same, but the quantity of soap should change.
The type of soap should remain the same, but the temperature of the water should change.
Answer: the type of soap should remain the same
Explanation:
i took the test
Answer:
D
Explanation:
edge2020
18) What is the difference between eumelanin and pheomelanin?
Answer:
Eumelanin is black or brown pigment and pheomelanin is red or yellow pigment
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Answer: A
Explanation: I hope this helps!
Which of the following is false about DNA?
A. DNA is made up of units called nucleotides.
B. Any base can pair to any other base.
C. DNA contains the instructions to make proteins.
D. DNA is found in a cell's nucleus.
Answer:
b. any base pair can pair to any other base
Explanation:
Any base pair cannot pair with any other base, Adenine pairs with thymine and cytosine pairs with guanine.
• The hereditary material in humans and almost all of the living species is known as DNA or deoxyribonucleic acid.
• The majority of the DNA is present within the nucleus of the cell.
• DNA comprises the instructions to make proteins that helps to perform essential functions within the body of an organism.
• Within the DNA, information is stored in the form of a code formed of four chemical bases, that is, Adenine, guanine, cytosine, and thymine.
• The base pairs present within the DNA pairs up with each other, that is, adenine pairs with thymine only, and guanine pairs with cytosine, no other kind of pairing is found within the DNA. Each base of also attached with a molecule of phosphate and sugar.
• Together, a phosphate, base, and sugar are known as a nucleotide.
Thus, statement B is incorrect.
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Why are the properties of a compound so different than the properties of the elements that make up the atom?
Answer:
The properties of compounds are different from the properties of the elements that form them—sometimes very different. That's because elements in a compound combine and become an entirely different substance with its own unique properties. Do you put salt on your food? Table salt is the compound sodium chloride.
Explanation:
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Please help I’ll give brainliest to whoever helps :)
Answer:
1:Cell
2:organ
3:tissues
4:A tissue is a group of similar cells that work together to perform a specific job. Specialized cells form specialized tissues such as blood tissue. A group of tissues working together to perform a specific function is called an organ. Organs are the third level of organization.
Explanation:
True or false (look at the pic below for the question)
Answer: True
Explantion:
Answer:
I am going to say true
Explanation:
Plants often store food in their stems. Roots - The roots of a plant grow underground. Roots help to keep the plant from falling over and gather water and minerals from the soil. Some plants store food in their roots.
Please correct me if I am wrong :)
So meiosis produces I need help
whick factor is a density dependent limting factors on poplation of a species
Answer:
I need to see an image of something to help u out